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Yoo, Chun Sang
Combustion & Propulsion Lab
Research Interests
  • Numerical turbulent combustion

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Interaction of turbulence, chemistry, and radiation in strained nonpremixed flames

Cited 5 times inthomson ciCited 5 times inthomson ci
Title
Interaction of turbulence, chemistry, and radiation in strained nonpremixed flames
Author
Yoo, Chun SangIm, HGWang, YTrouve, A
Keywords
DEPENDENT BOUNDARY-CONDITIONS; HYPERBOLIC SYSTEMS; FLOWS
Issue Date
2005
Publisher
IOP PUBLISHING LTD
Citation
SciDAC 2005: Scientific Discovery Through Advanced Computing, v.16, no., pp.91 - 100
Abstract
This paper provides an overview of recent progress in our development of highfidelity simulation of turbulent combustion with detailed chemistry. In particular, two major accomplishments are presented and discussed: (a) As for the computational aspects, it was recognized that many existing techniques to treat inflow and outflow boundary conditions for compressible flow simulations suffered from spurious errors when applied to highly turbulent reacting flow problems. Upon careful examination, the sources of these problems have been identified and an improved characteristic boundary condition strategy has been developed. The new method has been applied to various test problems, thereby demonstrating that the improved boundary conditions can successfully reproduce complex combustion events in a finite domain size with desired accuracy and stability. (b) As a science application, more advanced physical models for soot formation and radiative heat transfer have been developed in order to provide fundamental understanding of the interaction among turbulence, chemistry and radiation. We have performed several parametric simulations of two-dimensional ethyleneair nonpremixed counterflow flames interacting with counter-rotating vortex pairs and injected turbulent flows to investigate transient dynamics of soot formation process. Detailed analysis on the transient characteristics of soot behavior is discussed.
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DOI
http://dx.doi.org/10.1088/1742-6596/16/1/011
ISSN
1742-6588
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